Pre-clinical evaluation of the new veress needle+ mechanism on thiel-embalmed bodies

Pre-clinical evaluation of the new veress needle+ mechanism on thiel-embalmed bodies: a controlled crossover study - Experimental research

Postema, R.R. (TU Delft Biomechanical Engineering; Amsterdam UMC)
Hardon, S.F. (TU Delft Medical Instruments & Bio-Inspired Technology; Amsterdam UMC)
Cefai, David (ProVinci Medtech)
Dankelman, J. (TU Delft Medical Instruments & Bio-Inspired Technology)
Jansen, F.W. (Leiden University Medical Center)
Camenzuli, Christian (University of Malta)
Calleja-Agius, Jean (University of Malta)
Horeman, T. (TU Delft Medical Instruments & Bio-Inspired Technology)

Biomechanical Engineering

2023

Background:
Veress needles (VN) are commonly used in establishing pneumoperitoneum in laparoscopic surgery. Previously, a VN with a new safety mechanism ‘VeressPLUS’ needle (VN+) was developed to reduce the amount of overshoot.

Methods:
Eighteen participants (novices, intermediates, and experts) performed in total of 248 insertions in a systematic way on Thiel-embalmed bodies with wide and small bore versions of the conventional VN (VNc) and the VN+. Insertion depth was measured by recording the graduations on the needle under direct laparoscopic vision.

Results:
Participants graded the bodies and the procedures as lifelike. Overall, a significant reduction (P<0.001) in average insertion depth was found for the VN+ compared to the VNc of 26.0 SD16 mm versus 46.2 SD15 mm. The insertion depth difference in the novice group was higher compared to the intermediates and experts (P<0.001). The average insertion depth for both needle types was less (P<0.001) for female participants compared to male.

Conclusion:
This study indicated that the VN+ significantly reduced the insertion depth in all tested conditions. Whether the difference between female and male performance can be linked to differences in muscle control or arm mass should be further investigated. Useful technical information was gathered from this study to further improve the VN+.

entry technique
laparoscopy
safety mechanism
veress needle
OA-Fund TU Delft

http://resolver.tudelft.nl/uuid:6a0ed4b8-8b19-4078-b678-3345956b33d5

https://doi.org/10.1097/MS9.0000000000000640

2049-0801

Annals of Medicine & Surgery, 85 (5), 1371-1378

Institutional Repository

journal article

© 2023 R.R. Postema, S.F. Hardon, David Cefai, J. Dankelman, F.W. Jansen, Christian Camenzuli, Jean Calleja-Agius, T. Horeman